package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;

    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        // 保存菜品信息
        this.save(dishDto);
        Long dishId = dishDto.getId();

//      1 遍历插入 2 收集 3 批量插入  菜品口味
        List<DishFlavor> list = dishDto.getFlavors();
        list = list.stream().map((item) -> {
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        dishFlavorService.saveBatch(list);

    }

    /**
     * 根据菜品id查询菜品详情和分类信息
     *
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish, dishDto);

        LambdaQueryWrapper<DishFlavor> lam = new LambdaQueryWrapper<>();
        lam.eq(DishFlavor::getDishId, dish.getId());

        List<DishFlavor> flavors = dishFlavorService.list(lam);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    public void updateDishWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }

    //
//    @Override
//    // 开启mybatis事务
//    @Transactional
//    public void updateDishWithFlavor(DishDto dishDto) {
//        //更新dish表基本信息
//        this.updateById(dishDto);
//        // 清理菜品对应当前口味信息 dish_flavor表的delete操作
//        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
//
//        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
//
//        dishFlavorService.remove(queryWrapper);
//
//        // 添加 当前提交过来的口味信息 --- dish_flavor表insert的操作
//
//        List<DishFlavor> flavors = dishDto.getFlavors();
//        flavors = flavors.stream().map((item)->{
//            item.setDishId(item.getId());
//            return item;
//        }).collect(Collectors.toList());
//        dishFlavorService.saveBatch(flavors);
//
//    }



}
